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Whales have what seem like remnants of a pelvis and femur, as shown here. What are these structures an example of?

User Tokfrans
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2 Answers

2 votes

Answer:

the answer is the the third one for thoughs who have E2020

Step-by-step explanation:

User Laurence Gonsalves
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They're vestigial structures (meaning they're "left over" from some ancestor species of the whale). In the whale's ancestor species, the pelvis and femur were functional; over time, as the whale started living in the ocean and they became unnecessary, the pelvis and femur shrunk into what they are now.
User Maxyfc
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